Analysis, Mathematical Model and Selected Simulation Research of the GNSS Navigation Receiver Correlator

Setlak, Lucjan; Kowalik, Rafał

doi:10.1051/matecconf/201821005008

Cited by 7 publications

(7 citation statements)

References 17 publications

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“…The ionospheric advance depends on frequency. The above Equations ( 5) and ( 6) eliminate the first-order ionospheric advance effect of the observation, which is widely used in the GNSS data processing [26][27][28]. The disadvantage of this linear combination is that noise from 1 { and 2 { measurements increases threefold and that ambiguities cannot be directly resolved as integers.…”

Section: Linear Combinations Without Influence Of the Ionospherementioning

confidence: 99%

RTK Kinematic Positioning Accuracy with Double Phase Difference of SIS GNSS Signals

Setlak¹,

Kowalik²

2021

Komunikácie

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The article presents results of verification of the kinematic measurements usefulness for precise real-time positioning RTK in the local reference system. These measurements allow for continuous RTK measurements in the event of temporary interruptions in radio or internet connections, which are the main reason for interruptions in RTK kinematic measurements and cause a decrease in the reliability and efficiency of this positioning method. Short interruptions communication are allowed during the loss of the key correction stream from the local RTK support network, so the global corrections obtained from the geostationary satellite are used. The aim of the article was to analyze the accuracy of measuring the position of moving objects. Practical conclusions were formulated according to the research subject, the presented mathematical models, the experiment and the analysis of the obtained results.

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Section: Linear Combinations Without Influence Of the Ionospherementioning

confidence: 99%

RTK Kinematic Positioning Accuracy with Double Phase Difference of SIS GNSS Signals

Setlak¹,

Kowalik²

2021

Komunikácie

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“…The key aspect of estimating the PPP solution depends on the application of the linear free-ionosphere combination. The next part is explained in detail with the traditional implementation of the PPP technique using the smallest quadratic estimation method [15], [16], [17]. Because accurate satellite orbit information and clock are known, satellite clock error and satellite position , , are precisely known.…”

Section: An Estimated Model For the Solution Of Ppp Techniquementioning

confidence: 99%

Kinematic Studies in the Field of Accuracy and Position Determination of Aircrafts Using the PPP Technique by the GPS System

Setlak

Kowalik

2019

MATEC Web Conf.

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This article discusses the results of the measurements of position accuracy in 3D space for a UAV object using real-time kinematic measurements of the GPS system. The aim of the research presented in the work was to determine all three components (x, y, z) describing the location of the UAV object during the flight and making comparative characteristics using the PPS navigation service. Comparison of the differences between the two methods showed that the obtained results are characterized by a 95% of certainty. The results obtained in this experiment showed the accuracy of height measurement using the PPS GNSS system at a level of 10-80 centimeters. The results of this study also indicate that kinematic measurements can be very useful in the work of the air traffic controller and engineers of other specialties involved in position determination using satellite techniques. The article also presents a mathematical model defining the process of determining the position of a UAV object during the flight, taking into account kinematic measurements. In the final part of the work, practical conclusions were presented based on the analysis and selected simulation tests.

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“…Current multipath interference suppression technologies are developing primarily through the use of two approaches: receiver antenna design and signal processing. Antenna improvement technologies, from the antenna design point of view, include activities such as drawing a diagram of the multipath environment around the antenna, using special types of antennas, and selecting the appropriate locations to position the antenna [ 12 , 13 , 14 , 15 ]. Multipath interference suppression technologies based on signal processing fall into two main categories: time domain signal processing and spatial domain signal processing.…”

Section: Introductionmentioning

confidence: 99%

“…Figure14. Signal processing in the Galileo receiver operating on the L1 frequency; on the left side, the signal waveform in color without the noise suppression system applied; on the right side, the working system operating in the LTE system signal elimination for the reception of signals from five satellites.…”

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confidence: 99%

Study and Analysis of Interference Signals of the LTE System of the GNSS Receiver

Setlak¹,

Kowalik²

2021

Sensors

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Sometimes, it is impossible to conduct tests with the use of the GNSS system, or the obtained results of the measurements made differ significantly from the predicted accuracy. The most common cause of the problems (external factors, faulty results) are interference disturbances from other radio telecommunication systems. The subject of this paper is to conduct research, the essence of which is an in-depth analysis in the field of elimination of LTE interference signals of the GNSS receiver, that is based on the developed effective methods on counteracting the phenomenon of interference signals coming from this system and transmitted on the same frequency. Interference signals are signals transmitted in the GNSS operating band, and unwanted signals may cause incorrect processing of the information provided to the end-user about his position, speed, and current time. This article presents methods of identifying and detecting interference signals, with particular emphasis on methods based on spatial processing of signals transmitted by the LTE system. A comparative analysis of the methods of detecting an unwanted signal was made in terms of their effectiveness and complexity of their implementation. Moreover, the concept of a new comprehensive anti-interference solution was proposed. It includes, among others, information on the various stages of GNSS signal processing in the proposed system, in relation to the algorithms used in traditional GNSS receivers. The final part of the article presents the obtained research results and the resulting significant observations and practical conclusions.

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Analysis, Mathematical Model and Selected Simulation Research of the GNSS Navigation Receiver Correlator

Cited by 7 publications

References 17 publications

RTK Kinematic Positioning Accuracy with Double Phase Difference of SIS GNSS Signals

RTK Kinematic Positioning Accuracy with Double Phase Difference of SIS GNSS Signals

Kinematic Studies in the Field of Accuracy and Position Determination of Aircrafts Using the PPP Technique by the GPS System

Study and Analysis of Interference Signals of the LTE System of the GNSS Receiver

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